Finding the Third Proportional to 222,886.50 and 434,604

Step by Step Solution

1. Step 1: Write the proportion equation
   222,886.50 : 434,604 = 434,604 : x
2. Step 2: Convert to fraction form
   222,886.50/434,604 = 434,604/x
3. Step 3: Cross multiply
   222,886.50x = 434,604 × 434,604
4. Step 4: Simplify right side
   222,886.50x = 188,880,636,816
5. Step 5: Solve for x
   x = 188,880,636,816/222,886.50
6. Step 6: Final answer
   x = 847,429.69